Stock Solutions Provided A Shampoo 1 100 B Stock Seed C Stock Gga 300mg L Water To Be Tested Bottle Label Dilutio 1 (71.29 KiB) Viewed 20 times
Stock Solutions Provided A: Shampoo 1:100 B: Stock seed C: Stock GGA (300mg/L) # Water to be tested Bottle Label Dilution Water (ml) Sample (mL) Seed (ml) Dilution ratio (P) Doi (mgL) DOf (mg/L) 1 Seed Seed blank - 1 298 2 8.22 7.44 2 Seed (duplicate) Seed blank - 2 298 0 8.28 7.81 3 Standard mixture of glucose-glutamine acid Standard - 1 294 2 8.41 7.79 4 Standard mixture of glucose-glutamine acid (duplicate) Standard - 2 294 8.59 5.86 5 Shampoo sample Shampoo - 1 297 1 2 8.54 7.66 Shampoo sample (duplicate) Shampoo - 2 297 8.53 7.73 2 4 4 2 2
i. Determine the BOD of the seed blank (i.e. using the seed blank as a 'sample'), standard glucose and glutamic acid and shampoo samples provided to your group. Show your full working out in your report. Hint: don't forget to include the dilution of the original shampoo sample you were given (6 marks)
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